Floor rack construction for refrigerator cars



Feb. 16, 1954 H. E. OSBORN FLOOR RACK CONSTRUCTION FORREFRIGERATOR CARS Filed July '21, 1950 4 Sheets-Sheet l Q I] wl 1 77 5 l i 0 o o M W LW 0 w 3 9% LiiilirliiliiirIIIL mtwwmp H. E. OSBORN Feb. 16, 1954 FEQOR RACK CONSTRUCTION FOR REFRIGERATOR CARS Filed July 21, 1950 4 Sheets-Sheet 2 H. E. OSBORN FLOOR RACK CONSTRUCTION FOR REFRIGERATOR CARS Filed July 21, 1950 Feb. 16, 1954 4 Sheets-Sheet 5 Q mm Q N TR -Qm Feb. 16, 1954 H. E. OSBORN' 2,669,192

FLOOR RACK CONSTRUCTION FOR REFRIGERATOR CARS 4 Sheets-Sheet 4 Filed July 21, 1950 l W I I w Patented Feb. 16, 1954 FLOOR RACK CONSTRUCTION FOR REFRIGERATOR CARS Howard E. Osborn, Michigan City, Ind.

Application July 21, 1950, Serial No. 175,217

19 Claims. (01. 105-375) This invention relates to improvements in floor rack construction for refrigerator cars and it consists of the matters hereinafter described and more particularly pointed out in the appended claims.

One object of the invention is to provide a floor rack construction which itself functions primarily as the load carrying floor for the car and therefore obviates the necessity of providing a strong floor in the car itself for the support of the rack, as is ordinarily the case.

' It is also an object of the invention to provide a floor rack of this kind which is so constructed as to efficiently support the lading at an elevation above the floor of the car in a manner preventing contact with the water and brine that might be flooding the floor.

Another object of the invention is to provide a rack for this purpose which is so constructed as to permit a circulation of air up through the same, and laterally from the sides toward the center of the car and also from end to end thereof, longitudinally of the car.

A further object of the invention is to provide a rack construction which may be readily and thoroughly cleaned and moved into a position permitting a like cleaning of the car floor, as by scraping and flushing.

Also it is an object of the invention to provide a rack construction of this kind, which though relatively light in weight, is strong and rigid to withstand stresses imposed by the lading load and which is simple to construct from prefabricated parts for low cost production.

Furthermore, it is an object of the invention to provide a rack of this kind, of an open work construction and including a marginal frame for engagement upon the floor of the car and upper and lower courses of laterally spaced, structural members that are secured to parts of the marginal frame but elevated above the bottom thereof with the structural members in one course extending at a right angle to those in the other course and whereby said courses of structural members coact with each other and with the frame in affording a great strength for the rack so that it will have a long period of usefulness without requiring service or repair.

Again it is an object of the invention to provide a rack capable of carrying extremely heavy loads without damage and which loads are-often in the nature of 5000 lbs. concentrated in areas of the order of 1 /2" by 7" as imposed by the tires of powered lift trucks used in loading or unloading the cars, whether the lading'is or is not 2 of the kind requiring refrigeration while the car is en route.

The above mentioned objects of the invention, as well as others, along with the several advantages thereof will more fully appear as the specification proceeds.

In the drawings:

Fig. 1 is a transverse vertical sectional view through the floor of a refrigerator car, equipped with racks embodying the preferred form of the invention.

Fig. 2 is a top plan view of a refrigerator car floor rack made in accordance with the invention, on a scale enlarged over that of Fig. l, with certain of the parts of the rack being shown as broken away for better illustrative purposes.

Fig. 3 is an end elevation of the improved rack as viewed from the right hand side of Fig. 2.

Fig. 4 is a side elevation of the improved rack as viewed from the near side of Fig. 2.

Fig. 5 is a transverse vertical sectional view through the rack as taken on the line 5-5 and on a scale enlarged over that of Fig. 2.

Fig. 6 is a longitudinal vertical sectional view through the rack, on the scale of Fig. 5, as taken on the line 6--6 of Fig. 2.

Fig. 7 is a fragmentary horizontal detail view through a partof the rack as taken on the line 1--'I and on a scale enlarged over that of Fig. 5.

Fig. 8 is a perspective view of a part of one of the end supports or girders of the rack on substantially the scale of Fig. '7.

Fig. 9 is a perspective view of a part of one of the side supports or girders of the rack on the scale of Fig. 8.

Fig. 10 is a perspective view of a part of one of the top beams embodied in the rack on the scale of Fig. 9.

Fig. 11 is a perspective view of a part of one of the under beams embodied in the rack on the scale of Fig. 10.

Fig. 12 is a side elevation of a portion of a rack embodying a modified form of the invention.

Fig. 13 is a vertical sectional view as taken on the line l3l3 of Fig. 12, with one of the parts in a changed position.

Referring now in detail to that embodiment of the invention illustrated in Figs. 1 to 11 o f the accompanying drawing, the improved rack includes a marginal rectangular frame made up of a pair of counterpart end girder beams i5-i5 and a pair of counterpart inner and outer side supports l6l 6, all of fabricated sheet metaland operatively attached together at their ends, and which best appear in Figs. 3 and 4 respectively.

The beams l determine the width of the frame, which is approximately one-half the width ofthe floor of the car with which it is to be used. The side supports I6 determine the length of the frame and is considerably shorter than the length of the said floor. Usually a number of racks are dis posed along each side of the floor to meet substantially on the center line of the floor of the car. A fragmenteotlione iofgthe end; beams @best, ap

pears iifFig'. 8 and as shown thereinsaid beam, which is fabricated of sheet metal, includes an upright web I! having inturned top and bottom horizontally disposed flanges l8,-;and I-9 respectively. The top flange is somewhat widerfithan the bottom flange, which forms the floor engaging base for the beam. Dependingdromtheitside of the flange l8 opposite the web ll is a veljtical flange that terminates in a horizontally disposed ledge or lip flange 2|, considerably-marrower than the flange it. On the center line of the dasternentioned-iflange ia. a? numbemof Jungitudinally spaced, elongated openingssflfiqforathe :passageuof. air atherethrough.

W-Ilhe: web "11 of;thetbeanrriseproviided with; a plurality Iofi longitudinally- ;spaced,z:.=rectangular openings therein defined in partabyithe spaced posts 28. These posts are narrower than the -op'eni ngs 2 5 andrmarginsmf -said posts are turned inwai dlyi as right: angledeflangesx '2'l.i-2

The upper portions ofkthelweb in. conjunction with the flanges l8 and 20, impart a downwardly opening channel-like. :crossnsection te the i-beam and this cross- -section :is reinforced againsti dis- "tortion or -oolla'pse by a pluralityof-longitudinally spa'ceda transversely extending-stiffener members 2 8 composed-of channel and Z bars of: a -depth approximating that of t-he flange 20. -As--best shown in' fiige 3 =the 1 top -flange--of--each-=rn ember --l8 engages with -and is suitably attached to the underside of the flange l8.

" The construetion 'above} described provides a rlat'ively lig ht weight beamof great strength, capableof 'Withstanding heavy loads without descanner-w rping.

' *Eachsidesupport I 6-is fabricated from-warts formed structurally of=-sheet --metal-- and-- is-cdmposed nf-upper and lower vertically spaced angle bar Trans 1 til -3 l -and -;upright, longitudinally spaced posts 'orcolumns =32 32. The horizontal flanges-"3'3 of each 'rail' face -inward1yand=theverother. Each post or colum n -isconstituted:bya 'l l th of channeliron, with the' flanges 35 thereer facing inwardly and with-the= web13fi thereof engaged against the inside of the verticalflanges -34f andfixed thereto with-the *ends of said; webs and 's'aid -flanges engaging-with-the opposed-faces of the flanges 3333 of the rails. :the web of each post or column arefopenings 31,, which "together With the spaces between the posts 7 or 4columns 32 provide a maximum .of air passages through' the side supports ,as a whole. The ends of the-end and side supports '1 5- -16 meety'to providethe corners 10f; the; frame andeach corner -is-reinforced-by a corner angle 38, as best appears inthe upper right hand corner-'oFEigI 2.. 'Said anglesflfi function as corner columnsiin supportmg a loadimposed directly thereover as when "the wheel-of a power lift truck passes 'over a-cor er. of the rack.

--The supports I16 have less height than saidend rheamsi .l 5. and; when; said lbeamstand' supports *are n:;frame;forming relation, theflanges cl land gthe menses: .33t f therbottomwrails 1 Ltare in;=the. ;same

0 and -1l-respectively.

The members 40 of the upper course are each -0f a channel-like cross section and extend parallelwwithithe end beams 15 and the members of the-lower course are each of a Z bar-like cross 15' sectionand extend parallel with the side supports S-and -thereio-re at a right angle to said membersgw.

Each member 40 includes a top web 42 and depending vertical marginal flanges 4343, each of which terminates in an outwardly extending rledgeraM. Thiseprovide vforueachememb m w a lcrossfsection hioh ma 'with theerosstsection 50f ;:the;:upper 1101?. son. of-ieachgendgbeam115. ;;,;In :the; web 142,91" eaclrnlemher 0 areiqn itu inal-ly spaced openings 45 that correspond to the-pollen- :ing.- 23,-in the :web. 11 3110f :zthe IGIldJbBfihfllS.

'1; Each member it-.includesamuprisht M ade an upper, and lowerupppositelY; rfacingr horizontal flanges 1-14 1 and 548 l respectivelyaand inzsaid avzebtzare longitudinallwspaced openings :49 -49; Whichtafford a circulation.ofirairithrougl idvweb. In each-:member- :40 para: transverse .z-stifrenersa vi4 I a secured to the-.1underside-==of athe =web3;4.2 iioi ithe -member, as best,appearsvinr-Eig. 5.";These members Maare in'the.=form of channel andZ: bars, like the members 2 8-. beforetmentioned.

Each member 4| hasarheight lesslthan' that of the side supports andithere is one of 'these members for eaoh post =26 :of theuzpair of -endsupports and at eachepend of the bottom flange of I each member 4| is we'lded ananglebracketorr011 1550.

I :In the completed-:rack-the tverticaliflanges ififla of the bracket clips arez each engagectwith. and are welded" to the inner f ace 'Of'ithe posts 2 6 of bothendbeams 15. "The vertioalweb of each =member 4b is disposed insideotand is-"weldedto One r 0f "the flanges 2 0f said posts, ethe upper flanges of all of said membersa'beingvflush with "the like-fla-nges;-of;the upper-rails of the=sidesupports. This-spaces the bottom flan es=48 of "said -members 4|--in a, plane above'thatsof thealower flanges l 9 and 33 of "theend beams, and; side supports.

Also the flanges 44, either-members fliken a upon and are welded-,to, the top flanges :41 of all 1 ofthe-members 4 I Thus the Webs 13 of; the endbeams in connectionwith the webs' i42 ofythemembers flil constitute -latera a e h r a :s ri ,iof. he rac which are separated by end and intermediate h n s '5 I '..'W h,,bes.t ap ear. in? Ri ,6. "$111 sides of, the. end channels are defined byithever- .ti ja fl n 12 warts. re ectivel .and;:.the r at r t .of 'th b oms ot aid. hannelsar si n de the led es 1 l and '4 ,.of1theqend beam 15 and the members "40 respectively. "QThe isides 'ofthe intermediate channels are defined by the vertical flanges 43- of adjacentmembersjflfl and "the greaterpartof the bo-ttoms-of -th e intermediate channels are formed by the'k'flanges" 44 of adjacent members 40.

"To evenup and make the tread surfaces of the :rack, a 4 continuous onea -When sodesi-red, P-may :filheach :channelsS l with= a:strip: or bar' 52;, pref- Each filler strip or bar may be pivoted at one end to the adjacent flanges 4343 by cross pins 53 extending through said flanges into opposite sides of the bar, which pins afford a pivotal connection for said strips or bars. Thus, said bars may be swung from the horizontal position wherein they fill said channels to an upright position shown in Fig. 13 and wherein they open or expose the channels. Thus a continuous floor surface may be provided by the racks for lading.

When the filler strips are swung into an upright position, cleaning of the rack is facilitated.

That side of each support 30 that is associated with an adjacent side of a car, when installed therein, is provided with a pair of longitudinally spaced hinge ears 54, as best shown in Figs. 1

and 2.

The manner in which the rack functions primarily as the load carrying floor will be best understood by reference to Fig. 1.

In Fig. 1 is illustrated a transvers sectional view through an insulated wooden floor of a refrigerator car of special construction, along with associated portions of the sides and underframe thereof. In said Fig.v 1, Eli is the center sill and are stringers a which are supported by members 74 carried by the underframe cross bearers 15.

From the foregoing it will be understood that any load imposed upon the fioor racks will be transmitted through the stringers mentioned directly to the car underframe, because the inner sides of the racks are in operative alignment with the stringers 6355 and the outer sides are in operative alignment with the stringers 65a'ila. Because of the rigid character of the floor racks, intermediate supports for them become unnecessary and the floor can be of thinner plank than is conventional in refrigerator car construction. Indeed the floor 66 and sub-floor 62 serve primarily as means of confining the insulation 89 therebetween.

Along each side of the upper flooring are upright hinge lugs 10, to which the hinge ears 54 on the racks are pivotally attached by pins H,

which extend longitudinally of the car, just within the vertical planes of the inner sheathings 68 of the side walls.

In said Fig. 1 th racks are shown in their down position, wherein they engage fiatwise upon the upper flooring. When it is desired to clean this flooring the racks may be swung upwardly about the pins H as an axis into an upright position along each side of the car and this exposes substantially the entire surface of the flooring 66 for cleaning purposes.

The improved rack structure, though light in weight, is strong and rigid and ably resists heavy lading loads without deflection when concentrated in small areas as by the wheel tires of a lift truck used in loading or unloading the car.

Also the improved rack provides a maximum of air circulation therethrough in all directions for a proper cooling or refrigerating of perishable products making up the lading.

Again because of the load carrying character '6 of the racks and their positioning relative to parts supported by the car underframe the car floor is relieved of the burden of carrying the load and hence can be of thinner construction.

I claim as my invention:

1. A floor rack construction for refrigerator cars embodying therein side supports for extending longitudinally of the floor of the car and and supports for extending transversely of said floor, spaced bottom beams parallel with said side supports and secured at their ends to said end supports, and spaced top beams at least certain ones of which extend at an angle to and are engaged upon and are fixed to said side supports and to said bottom beams respectively.

2. A floor rack construction for refrigerator cars embodying therein side supports for extending longitudinally of the floor of the car and end supports for extending transversely of said floor, spaced bottom beams parallel with said side supports, attached at their ends to said end supports, and spaced top beams parallel with said end supports and engaged upon and fixed to said side supports and to said bottom beams respectively.

3. A floor rack construction for refrigerator cars embodying therein side supports for extending longitudinally of the fioor of the car and end supports for extending transversely of said floor, spaced bottom beams parallel with said side supports and attached at their ends to said end supports, and spaced top beams parallel with said end supports and engaged upon and fixed to said side supports and to said bottom beams respectively, the bottom edges of said side and end supports being disposed in the same common plane and the bottom edges of said bottom beams being disposed in a plane above the first mentioned plane.

4. A floor rack construction for refrigerator cars embodying therein side supports for extending longitudinally of the floor of the car and end supports for extending transversely of said floor and attached at their ends to the ends of said side supports, the bottom edges of said side and end supports being disposed in the same common plane, a course of spaced bottom beams extending parallel with said side supports and secured at their ends to said end supports, said bottom beams having their bottom edges spaced above said common plane and having their top edges disposed in the plane of the top edges of said side supports, and a course of spaced top beams extending parallel with said end supports and attached at their ends upon the top edges of the side support and attached at points between their ends to top portions of said bottom beams.

5. A door rack construction for refrigerator cars embodying therein an open rectangular frame comprisin pairs of side and end supports attached together at their ends, upper and lower courses of beams arranged at an angle to each other and connected at their ends to said side and end supports respectively and connected at points between their ends to each other, the beams of the upper course forming the active surface of the rack, said beams in said courses, when a load force is imposed upon them within said frame, coacting to distribute the stress of said load to said pairs of side and end supports of the frame.

6. A floor rack construction for refrigerator cars embodying therein pairs of right angled supports attached together at their ends to form a rectangular frame, a lower course of '8 rca-rserembodying: therein wan l'open'v rectangular iram'e comprisinga' pa-irs 01? side and endsupports attached tcgether at their ends, :the supportsf one mainincluding upright webs having openpair of supports, anctrarmupperficourses ofzspaced singsftherein separated =by zupright:post' portions,

' structural meinbersf arranged rat'. awright angle tdithe beams criniithellower- -courseand eneeiged and attached at their mid p'ortionsito the flanges ther'eor andi 'attached iatzltheir: lends :to r the atop ar -lower course of spaced-structural members -arranged=pa-rallel with :the other pair-of supports, means for' attachi'ng the "ends "of r'said-"structural members2t0 the posts of said onepair of-- supp'ortions pfthelsupportsi initheotherpair theree ports and h'aving their toprsurfacesvdisposed in 7.: A' fioonxack construction.'afor refrigerator cars embodying lthereinl pairssiof xightwangled supports attachedatogethera at their ends-.tciorm thewplane of r the top surface-"of the "other pair of supports, :and 'amupper course 'oi spaced structural members arranged parallel with: said'one =-;pair of supports and engaged :and attached to a rectangular frarhe; a l'ower course iofispaced s the"top isuria'ces'fof saidvfirst mentioned-strucs'trncturalt? members rext'endingisbetween: and at- --tached attheir"ends .to on'e'pair 'of supports-and ieachi'havingr a ihorizontal itopl :flange disposed in -the= 'planetof 1 the stops. foi the I other pair 10f Ltural members and the: top r surface :of the other pair of supports.

"12.: A poor rack construction for refrigerator carsr embodying therein: an wopen: rectangular s pport ndianz p q pa p e frame comprising pairs of=sideandend supports :wardly 2 opening channels ehavingmlaterally :exiatending bottom flanges engaged on and attached *iltonthe flangeslof saidustructural .members and to the" stop" surface-pf ithe'esupports Fin: the-other upairiofisupports.

8.1.x fioorzrack construction ior aref-rigerator Ccarsxembodyingl therein pairs 1 not right angled supp'orts attached togetherat theinends to form t a :rectangular:Sframe, arlower courseuof ;spaced tstructuralr memberstextending rbetweenr'and- 'atc tashed att theirs'endsatto .onerpair ofrsupports :and :Jeach having. a vhorizontalatop flange zdisposed in -thewplanezof -i theitops fofxthe other pair 10f sup- -portsfizandn aniizupp-ert course for )space'd downiwafrdly: jopeni-ngi: channels" having laterally eX- e4 irt'endingbottom flanges engaged onrand attached LtoL- the-I topf'fianges ofvsaid -structural members and to the top surface of said other pair of supp'orts;itheisupports iot 's'aicl' one- :pair of i supports :attached a together at their ends; the end supports: including upright webs, having =1 openings therein' Esepar'aJted by :up-right "post -portions;-at wieast one-margin or each-post being iturnedt'inwardly :as a flange, a lower course" ofrzspaeed structural members each including: an upright "web arranged parallel Withthe'pair of side-supports; the: ends of the upright web or saidstructural m'embers being fixed t0 s2lid -flanges-of said sideisupportsgand an eupp'er Lcourse of=.spaced T structural members sarranged paralleh with 1 the Iv side 1 supports and engaged Eupon andattachedto 'the tops-f the end-supports and to the tops-cf said structural members in said-lower-course.

13: A =fle0r rack "construction for refrigerator ears: :embodying therein pairs of rightangled =v supports :attachecl together at their ends to :form a rectangular frame, one pair of supports-comprising supper and lower angle- 'barsi and longi- '-carrying channel portions@atl'thertop andihavingtmf spaced} posts 'connecting' said angle supports 'attach'ed ttgeth'er atz'their ends Ito i'orm 4 structurali :members liextending between and attach'ediat their ends to one' apairof supports and teach rhaving amorizontal- .top'. flange 'disposed in the plane :of 'the't-topszofiithe nether pair :Of sup 50 ports, mid /an upperrfcourse: :of-I:late1'ally:1spaced downwardly :opemng 1 channels having bottom lifianges :en'gaged ion/and attachedto :the flanges not :isaid i structural: members and: to thevtop su-rr-faeeioif thesupports .inhthe? iother pairuof sup- -bars a lower course :ot spaced beams arranged parallel W-itllsaid :pair of supp arts-and attached at their ends tothe other pair" of :supports and having their a top surfaces disposed in the plane 1 of the top surfaces of the upper angle bars-01 the: v ifirst mentioned =pair moi supports,- wand -an upper- 'course of I structural i :members arranged parallelwith: thectherpair =of' supports and engaged upon ancl 'attached to th firsementicned pairlofsupport's and' tov-s'aid-fianges ofsaid beams. 14;.- :In a floor-rack construetion for refrigerator cars, a frame embodying therein pairs: ofrsside and: end \supports arranged fiat right angles to 2: each other; a plurality of courses- =of beams arranged one above theother-and supportedi from 7 1 m -ri ports? tan d means vialsposedfi wmhmteachflhannel said pairs 01 st pports, and means at the ccrners member to stiilen the top portion ofthe same. .r10;- A i-floor. xrack construction ion refrigerator w carsr-embodying therein pairs -0f' right i angled supportsattached together at their-ends to forn i roi -the'fframe securing the ends of's'aid supports together and each acting as a cornerioolumn in supporting a load imposed :upon said'wccrners.

P 151 A -.refrigerator ear eomprising an 4 under- 2 'i' is :J. .t r a rectangular..frame,l alowercourse of spaced frame havmg lslde and center S1115 moss structural members extending between rand'at- .tached at theirendscto one pair-of supports and w each-having.- a horizontal. top :fiange disposed in the plane embetops ofthe other pair-of sup--v l members extending between the side :and :center sills} a: floor and a. load :cairrying floorrack compr-ising structure having-- :inner: and outer sides supported by the :undertrame and beams pa-rallel ports, and an upper course of spacedzdgwnwardlymfila with sand inner and =outer sides with: the bottoms opening channels having laterally extending "bottom. flanges-engaged on :and attached -to. the iiflangesi ofasaidmstructural-members and L to the stop surface of: the zother paireof isupports; said one pair of supports being formediatrthewtop-to @provide :ehannehportions chai ing.- their top tsuriaces disposed. in-rthe plane-:of :the top surfaces -ofthe! firstcmentioned channels.

:zof-irsaid beams disposed -ina planewaboverthe rfioor :of the-roar whereby a that '--.portion of: the floor-between the inner and" outer sides ofthe -fioor -rackx is primarily relieved of: the load im- 16= A refrigerator car comprisingalan 1 underframe having side: and ce'nterwsills :and:-: cross :bearerslextending between -the=' sills; a fioorg a sub-floor, and" longitudinallydisposed stringer llnAafloomrack ct'nstmctiomtorwrefrigeratonawmeans tspacingesaid:v-fioon "end su'b flo'oz aiapart vertically and being supported by the car underframe, and a pair of load carrying floor racks extending across the car floor and each havin a rectangular outline and an inner side in vertical alignment with one of said stringer means and an outer side in substantial vertical alignment with other of said stringer means whereby the floor portions within said outline are primarily relieved of the load imposed upon said floor racks.

17. A refrigerator car comprising an underframe having side and center sills and cross bearers extending between the sills, a floor, a subfloor, and longitudinally disposed center and side stringers spacing said floor and sub-floor apart vertically, said center stringer being supported by the center sill and the other stringers by other parts of the car underframe, and a load carrying refrigerator rack comprising structure having a rectangular outline and an inner side in vertical alignment with said central stringer and an outer side in substantial vertical alignment with one of said side stringers whereby the floor portions within the outline of said rack are pri- 4 marily relieved of the load imposed upon the floor rack.

18. A refrigerator car comprising an underframe having side and center sills and cross bearers extending between the sills, a floor, a subfloor, and longitudinally disposed center and side stringers spacing said floor and sub-floor apart vertically, said center stringer being supported by the center sill and the other stringers by other parts of the car underframe, and a pair of load carrying refrigerator racks extending across the car floor and each having a rectangular outline and an inner side in substantial vertical alignment with the stringer supported by the center sill and one rack having an outer side in vertical alignment with other stringers and the other rack having an outer side in vertical alignment with one of the other stringers, whereby the floor portions within said outline are primarily relieved of the load imposed upon the floor racks.

19. A refrigerator car comprising an underframe having side and center sills and cross bearers extending between the sills, a floor, a subfloor extending between the side sills, and longitudinally disposed center and side stringers spacing said floor and sub-floor apart vertically, said center stringer supported by the center sill and the side stringers by cross bearers of the car underframe, and a load carrying refrigerator rack comprising structure having a rectangular outline and an inner side in substantial vertical alignment with said central stringer and an outer side in vertical alignment with one of said side stringers whereby the floor portions within said outline are primarily relieved of the load imposed upon the floor rack.

HOWARD E. OSBORN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,073,151 Matthew Sept. 16, 1913 1,711,785 Hindahl et al. May 7, 1929 1,769,574 Gwinn July 1, 1930 1,937,615 Willoughby Dec. 5, 1933 2,056,137 Idoine Sept. 29, 1936 2,107,853 Coffey Feb. 8, 1938 2,142,798 Murphy Jan. 3, 1939 2,184,810 Crede Dec. 26, 1939 2,226,042 Zane Dec. 24, 1940 2,279,545 Zane Apr. 14, 1942 2,291,472 Johnston July 28, 1942 2,312,016 Zeidler Feb. 23, 1943 

